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Friday 7 August 2015

Malware spam: "Sleek Granite Computer" / "saepe 422-091-2468.zip" / "nulla.exe"

What the heck is a Sleek Granite Computer? As clickbait it is kind of weird.. but perhaps interesting enough to get people to click on the malicious attachment is comes with.

From:    mafecoandohob [mafecoandohob@bawhhorur.com]
To:    Karley Pollich
Date:    7 August 2015 at 13:17
Subject:    Sleek Granite Computer

Good day!

If you remember earlier this week we discussed with You our new project which we intend to start next month.
For Your kind review we enclose here the business plan and all the related documents.
Please send us an e-mail in case You have any comments or proposed changes.
According to our calculations the project will start bringing profit in 6 months.
Thanks in advance.

Karley Pollich
Dynamic Response Strategist
Pagac and Sons
Toys, Games & Jewelery
The only sample of this I had was malformed and the attachment wasn't attached properly. However, if properly formatted it would have been named saepe 422-091-2468.zip and it contains a malicious executable named nulla.exe.

This has a VirusTotal detection rate of 4/55 with Sophos identifying it as a variant of Upatre. The Hybrid Analysis report shows a typical Upatre / Dyre traffic pattern to:

This IP address belongs to Online SAS in France who seem to have hosted quite a bit of this stuff recently, the hostname identifies it as belonging to poneytelecom.eu. Traffic is also spotted to: (Triolan / Content Delivery Network, Ukraine) (LTnet, Czech Republic)

There is also non-malicious traffic to icanhazip.com to identify the IP address of the infected machine. This is worth monitoring though as it is a potential indicator of compromise. The payload is almost definitely the Dyre banking trojan.

Recommended blocklist:


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